Home / 2,515.71-3,470.85-1,520.61

Finding the Fourth Proportional to 2,515.71, 3,470.85 and 1,520.61

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Solution

The fourth proportional to 2,515.71, 3,470.85 and 1,520.61 is: 2,097.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,515.71 : 3,470.85 = 1,520.61 : x
  2. Step 2: Convert to fraction form
    2,515.71/3,470.85 = 1,520.61/x
  3. Step 3: Cross multiply
    2,515.71x = 3,470.85 × 1,520.61
  4. Step 4: Simplify right side
    2,515.71x = 5,277,809.22
  5. Step 5: Solve for x
    x = 5,277,809.22/2,515.71
  6. Step 6: Final answer
    x = 2,097.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.